AD9850 DDS Signal Generator Module, 0-55MHz Frequency with LCD Display

AD9850 DDS Signal Generator Module with LCD Display This compact signal generator module combines the AD9850 DDS synthesiser with a six-band output stage and an integrated LCD display, delivering a practical solution for bench testing, repair work and hobby electronics projects. The module supports continuous frequency adjustment from 0 to 55MHz in precise 1Hz steps, giving you fine control across the full range without the need for additional programming hardware. Voltage Regulation and Power Input The onboard 78L05 voltage regulator ensures stable operation when powered from a suitable DC supply. For normal use, an input voltage of 8 to 9V at around 200mA is recommended, with the 14-pin header accepting the 8V supply directly from the motherboard. A 12V input may be used for short-term testing only, as prolonged operation at this voltage will cause the board to overheat. Connection and Setup The module connects to an external encoder via the 5-pin and 6-pin headers, with the 7-pin encoder connection in the middle linking to the digital matrix input. This straightforward wiring arrangement allows quick integration into existing test setups or custom projects, and the on-screen display provides clear readout of the current frequency setting. Practical Applications With its wide 0-55MHz range and 1Hz resolution, this generator suits a variety of signal generation tasks, including oscillator testing, filter alignment and receiver alignment work. The six-band output covers the full frequency span, while the compact board layout keeps the module easy to mount in enclosures or on the bench.